Flying-machine construction



. imam? c. DQRNHER FLYING MACHINE CONSTRUCTION Filed Feb. 7, 1924 Au 5, tees.

iiidiiii *JLAUDIU'S DOENIER, 03E FRIEDRIGESHAFEN-DN-THE-BODENSEE, GERMANY, ASBIG-Nfiit Tl) THE FIRM: DURNIEE, METALLBAUTEN GESELLSCF-IAFE MIT EEElCHEMTETEH TAFTUNG, 0F FRIEDEICHSHALFEN, GEBMZLNY.

ELYKNG-MACZHWE CONSTEUCTIUN.

Appiteatlon filed Eebrnary 7, 19M. erbil Ho. 521,196.

To all wiwm it may concern:

Be it known that I, Cnmmns Donnmn. a citizen of Germany, residing at I riedrichs- -hafen-on-ihe-Bodensee, Germany, have invented certain new and useful Improvements Flying-Machine Constructions, of'

In monoplene or single-deck flying nus chines of all sorts, including flying hosts, the bearing plane err-wing has been mounted and fixed on the hull by means of e plurelit3 of rigid struts. However, this mode of fixetion cannot be made use of in every case and with all kinds of hulls. Moreover, it

entails s number of drawbacks, such as the difiiculqy resulting from the complicated connection between the plane and the several struts which letter also create a very considerable air resistance.

All these drawbacks are avoided, accord ing to the present invention, by connecting the wing or bearing plane with the hull by 'mesns of a single strut disposed in the planev bisecting the wing end in the vertical exiel plane of the hull. This strut is fixed to the win by being attached to or iiorining port of t e wing structure or frame and its end extendsthrou h an opening in the top wall of thehull into the interior thereof,

being fastened to the hull preferably in a detachable manner. In a preferred form of this strut its cro'ss-sectioneieree gradually increases from the point where it is connected or fixed to the hull, up to the point or points where it merges into the wing or hearing plane and the strut will then ofier the, outward appearance of a funnel. If desired, the end of the strut can be forked in order to properly distribute the joints, more particularly in the cm of guide surfaces,

tail rudders and the like, where the crossseetionsl area of the hull is only small.

In the drawings oflixedto this specification'end forming portthereof, two flyin chines embodying my invention are 1 lustrsted diwrommsticsily icy way of enemple. in the drewings- Fig. 1 is a front elevetion 01" e wing and hull showing the central position of the strut, whii-e,

Fig, is e side elevation of the machine as it whole.

Fig. 3- is at similar View of o flying boot having the tail rudder connected to the hull. by moons of a forked. axial strut, and

i is a crosscection of the rear per-- tion on the line A in Fig.

Referring; first to l. and 2, a is the self-supporting wing oi e single-deck flying machine. 0 is the hull and Z; is the single funnel-shaped strut fined to the wing in a line extending ecross the wing in the plane bisecting it, the lower end extending deepinto at cavity provided in the axial plane oi the hull.

In the modification disclhsed in Figs. 3

and l, the res-,1 guide surface or rertioel teil rudder a? is fixed, to the r ser-portion of the forces acting on the wing onto the hull ere greatd y simplified.

- E wish it to he understood that i do not desire to be limited to the erect details of construction shown and described, for oio-- vious modifications wlll occur to e person 11 skilled in the art.

I claim?- 1. The combination, with the hull and the hearing or guide plane of a dying machine, oi" a, single strut fired. to said plene end o .tending into and being fastened in activity provided and extending in the plane of symmetry of said hull.

2. The combination, with the hull and the besrin or guide plane of a dying machine, of a single strut fixed to said plane and forked at its lower end, the forked port of said strut extending into end being testenod hull by means of s single strut 7 forked at i bearing or guide plane of a dying machine,

of a single strut of varyin cross-sectional area. fixed to said plane an extending into andebeing fastened in a cavity provided and extending in the plane of symmetry of said hull.

4. The combinatiomwith the hull and the bearing or guide-'plane-of a flying machine,

' of a single funn'elhaped strut fixed to said lane and extending into and being fastened In-a cavity-provided and extending in the plane of symmetry of-said hull;

of a single funnelhaped strut fixed to sm 5. The combination, with the hull and the hearing or guide lane of a. flying machine, of a single strut ed to said plane and extending into and being detachably fastened in a cavity provided and extending in the plane of symmetry of said hull.

6. The combination, with the hull and the bearing or guide plane ofa flying machine plane and extending into and bein detachably fastened ina cavity provide and exltlenlclling in the plane of symmetry of said In testimony whereof I afiix m si aturr .CLAUDIUS- D R. IER. 

